*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
img{
    display: block;
}
/*头部*/
.container{
    width: 870px;
    margin: auto;
}
header{
    background-color:#54afdb;
    color: #fff;
    margin-bottom: 60px;
}
header .col-right img{
    display: none;
}
nav{
    padding-top: 12px;
    padding-bottom: 12px;
    margin-bottom: 60px;
}
nav .col{
    width:33.333333%;
    float: left;
}
.clearfix:after,
.clearfix:before{
    content:"";
    display: table;
    clear: both;
}
nav .col:first-child{
    height: 10px;
}
nav .col:nth-of-type(2){
    text-align: center;
}
nav img{
    display: inline;
}
nav .col:nth-of-type(3){
    text-align: right;
    font-size: 12px;
}
nav a{
    color:#fff;
    text-decoration: none;
    position: relative;
    top: 5px;
}
/*banner*/
.banner .col{
    width: 50%;
    float: left;
}
.banner p{
    font-weight: bold;
}
.banner h1{
    font-weight: 300;
    font-size: 37px;
    margin-bottom: 24px;
}
.banner a{
    color: #fff;
    text-decoration: none;
    display: inline-block;
    background-color: #2996cc;
    padding: 15px 50px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: bold;
    transition: .5s;
}
.banner a:hover{
    background-color: #127ecc;
}
.banner img{
    width: 100%;
}
section .col{
    width: 25%;
    float:left;
    padding-left: 10px;
    padding-right: 10px;
    text-align: center;
}
.list{
    margin-bottom: 62px;
    border-bottom: 1px #e0e0e0 solid;
    padding-bottom: 60px;
}
.list img{
    display: inline;
}
.list h3{
    font-size: 13px;
    color: #2e3b4e;
    padding-top: 10px;
    padding-bottom: 10px;
}
.list p{
    color: #687284;
    font-size: 13px;
    line-height: 20px;
}
/*------首页下载样式-----------*/
.download{
    text-align: center;
    margin-bottom: 60px;
}
.download h2{
    font-size: 28px;
    font-weight: 300;
    color: #384456;
}
.download p{
    color: #7e8796;
    padding-top: 24px;
    padding-bottom: 5px;
}
.download img {
    display: inline-block;

}
.download a:first-child{
    padding-right: 10px;
}
/*--底部样式----*/
footer{
    background-color: #1b2126;
    color: #5d696f;
    padding-top: 64px;
    padding-bottom: 73px;
}

@media (max-width: 600px) {
    .container{
        width: 80%;
    }
    nav .col-right a img{
        display: inline-block;
    }
    nav .col-right a span{
        display: none;
    }
    .banner .col{
        width: 100%;
        text-align: center;
    }
    .banner .col a{
        margin-bottom:30px;
    }
    .list .col{
        width: 100%;
        margin-bottom: 60px;
    }
    .list .col:last-child{
        margin: 0;
    }
    .download p a{
        width: 100%;
    }
    .download p a img{
        width: 40%;
    }

}